The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9 ppm and standard deviation 1.7 ppm. 10 randomly selected large cities are studied. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X-N9 1.7 0 b. What is the distribution of ? N(9 .5376 c. What is the probability that one randomly selected city's waterway will have less than 8.8 ppm pollutants? d. For the 10 cities, find the probability that the average amount of pollutants is less than 8.8 ppm. e. For part d), is the assumption that the distribution is normal necessary? Yes No

Q: 3.3 31 3 O 3 O 3평 37

A:

Q: a. Which of the error bars indicates the standard deviation? b. Which error bar indicates the…

A: Disclaimer: As the question has multiple parts, only first three will be answered.   The easiest and…

Q: u(z) dr

A:

Q: csc y

A: In a right angle triangle,It is given base side=x,hypotenuse=1one angle=y°So,opposite side of the…

Q: 4x e 3x

A: I = ∫4x e−3x dx

Q: What is AA-. wbetce 2 2 1 2 2 2 1 1 A = 2

A: To Determine: find AA-1 Given: we have a matrix A=122212221 Explanation: we have a matrix…

Q: LCM 3 and 5

A:

Q: e-4x

A:

Q: Combination C.  (87,1)

A: Given:              C87, 1 The number of k-combinations from a given set S of n elements can be…

Q: 164 24 7. 8. 88

A: Given

Q: middle one

A:

Q: 12 R 10 5

A:

Q: (c) Choose any two points on your line of best fit and find the equation of the line you have drawn.…

A: Answers may vary based on the points chosen. One of the possible answers is mentioned below. (c) The…

Q: V81x6 V3x3

A: Given expression is:  81x63x3 =81x63x3=27x6-3

Q: How do scavengers do the cleaning up job?

A: Scavengers are cleaners.

Q: the hang time

A:

Q: Given the parent function f(x) = 2, which graph shows f(x) + 1? -5 -4 -3 -2 2 3 4 2 -5 3 4 2.

A: Given :   f(x)=2x

Q: 3. Identify all the cycles at each node of the directed graph above.

A: Cycle is defined as a path that start and end at the same vertex.

Q: A large speaker that you are planning to use, has a huge diaphragm connected to a spring, the force…

A:

Q: Suppose the age that children learn to walk is normally distributed with mean 12 months and standard…

A:

Q: Identify the coordinates of the point in polar form based upon the given conditions. Use pi for T. r…

A: We will evaluate the required value.

Q: 4. Fill in the following contingency table with the number of observations that fall into each com-…

A: x1 = number of colored oranges from Skittles brand = 77 x2 = number of colored oranges from M &…

Q: B and C

A: Given

Q: 3. Graphically Subtract (-1+i) from (3+2i)

A: If we have to subtract a vector b from another vector a, graphically, then we actually are adding…

Q: 4 4 2 4) 3 4.

A: Topic- shifting and scaling of figure

Q: 3. 2 2 .b O 3 4 3.

A:

Q: 1 3 前Revie

A: ∠ABD=x°∠ACD=27°∠ABD and ∠ACD are in same segment.

Q: Find Sx" ĕ dx

A:

Q: buff'g'sinay olxly

A: To solve the following integral

Q: 1 3 8.

A:

Q: The height of women ages 20-29 is normally distributed, with a mean of 64.2 inches. Assume o = 2.6…

A: a) The required probability is 0.7556Explanation:from the given data : mean (mu)=64.2standard…

Q: Find the interpolating polynomial of the following points or functions using Newton's interpolation…

A: Newton's divided differences interpolation

Q: Letters b, c, d and e.

A:

Q: REVIEW: 16) Given: X is the midpoint of both AD and BC. Prove: AABX = ADCX 1) X is the midpoint of…

A: